The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2007
Filed:
Oct. 24, 2000
Yutaka Minami, Chiba, JP;
Masami Kanamaru, Chiba, JP;
Hideo Funabashi, Chiba, JP;
Yasushi Seta, Chiba, JP;
Masahiko Endoh, Chiba, JP;
Yutaka Minami, Chiba, JP;
Masami Kanamaru, Chiba, JP;
Hideo Funabashi, Chiba, JP;
Yasushi Seta, Chiba, JP;
Masahiko Endoh, Chiba, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
Heat-sealing polypropylene films having specific characteristics, and being well-balanced between a tensile modulus and a heat seal temperature, less tacky, and excellent in processability, transparency and impact resistance, as well as being excellent in resistance to whitening due to peeling, softness and impact resistance. A multilayered heat-sealing polyolefin resin laminate having at least one outermost layer produced from the above heat-sealing propylene polymers exhibits excellent low-temperature heat sealability and sufficient interlaminar strength without the use of an adhesive. The heat-sealing propylene polymers are produced by polymerizing propylene or polymerizing propylene with ethylene and/or C-Cα-olefin in the presence of a polymerization catalyst containing a transition metal compound represented by the following formula (I):